> With Ext3:> Filesystem block at Sector 0 is being updated more frequently at ratio> of 5.5 to 6 times that of data block.> Filesystem block(super block copies) are being updated at around> 1.5times the frequency compared to data block.> > Has anyone come across this kind of behaviour with these filesystems> on NAND Flash?

ext2/3 are not intended to be used with flash - they do not wear level,in fact the journal and some other blocks will get very heavily usedcompared to other blocks.